panmetis

Hello, I have used a lot the library IfcOpenshell to extract some data from IFC files. I am now intersting in create my own viewer with IfcOpenshell and OpenCascade. Unfortunely, I cannot succed in download OpenCascade and every tutorial I tried was a fail. Is anyone can advice me a good tutorial or just explain me step by step how I can install OpenCascade with python 3.9 ? I use pycharm and pyqt. Thank you !